Anoxic survival, growth and reproduction by the freshwater annelid, Tubifex sp., demonstrated using a new simple anoxic chemostat

Famme, Per; Knudsen, Jens

doi:10.1016/0300-9629(85)90130-6

Cited by 17 publications

(8 citation statements)

References 9 publications

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“…Growth may cease in low oxygen conditions if oxygen supply is only adequate to sustain ventilatory but not food-gathering energy expenditure U6nasson and Kristiansen, 1967) and some species may be able to tolerate anoxia for long periods. The oligochaete Tubifex tubifex was able to survive, grow and reproduce under continuous anoxia for 10 months (Famme and Knudsen, 1985).…”

Section: Taxonomic Groups and Life History Patternsmentioning

confidence: 99%

Eutrophication of Freshwaters

Wood¹,

Harper²

1992

230

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Section: Taxonomic Groups and Life History Patternsmentioning

confidence: 99%

Eutrophication of Freshwaters

Wood¹,

Harper²

1992

230

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“…SE taxa, tolerate or require sulfide (e.g. Powell et al 1980, Felbeck 1981, Giere et al 1982, sulfide detoxification capabilities are widespread among these taxa (Powell et al 1979, Nuss 1984, Powell & Somero 1985, and at least a few metazoans prefer anoxia to high (seawater-saturated) oxygen concentrations (Wieser et al 1974, Baker et al 1985, Famme & Knudsen 1985. Second, marine sediments are not simple 2-layer systems but are replete with microhabitats generated predominately by macro-infauna (Reise 1981a,b, 1984, Bell 1983.…”

Section: Introductionmentioning

confidence: 99%

Microdistribution of interstitial meiofauna, oxygen and sulfide gradients, and the tubes of macro-infauna

Meyers¹,

Fossing²,

En³

1987

Mar. Ecol. Prog. Ser.

106

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Vertical and horizontal mlcro-scale gradients of oxygen and sulfide and meiofaunal distributions were examined concurrently in laboratory microcosms to assess the importance of tube/ burrow wall chemistry in generating microhabitat for subsurface meiofauna. These distributions were compared to field distributions at a subtidal site in Corpus Christi Bay, Texas (USA). Results reveal a continuum of microhabitats across oxygen and sulfide gradients in marine sands. The majority of taxa llved at [ 0 2 ] below 50 BM. These included microoxyphilic oxybiota living at [O,] >O and thiobiota at [O,] = 0. All classic thiobiota lived below the zero-oxygen line where sedirnents usually contained measurable sulfide. Most, but not all, subsurface taxa were attracted to burrows/tubes; however, only 1 taxon, Praeaphanostoma, lived in the microoxyphilic habitat of the burrow/tube wall's oxic halo. The remainder lived outside this zone where [ 0 2 ] = 0. No dominant species had substantially overlapping distributions. Each abundant species occupied its own unique microhabitat. Most microhabitat boundaries could be explained by changes in 0, and sulfide concentration; however, a few taxa were differentially distributed in microhabitats of similar chemistry, suggesting that other factors were important. Changing sediment chemistry may remove or create optimal microhabitat seasonally so that taxa must be able to exploit a range of suboptimal habitats to survive throughout the year. Most microhabitats, in shortest dimension, were no more than 2 to 3 times the animal's size, suggesting that traverses of no more than a few body lengths would be necessary to move from optimal to suboptimal habitat. Overall, the complex distributional patterns of meiofaunal species suggest that Fenchel & Riedl's (1970) simple 2-layered model of marine sand bottoms, comprising a surface oxic layer and a sulflde system, is inadequate. Even taxa living where [02] = 0 were distnbuted differentially along the sulfide gradient. Whether thiobiota and oxybiota are merely 2 ends of a continuum or really ecologically relevant subsets of subsurface meiofauna must b e reconsidered.

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“…The mesohaline section has lost more than 50% of its intertidal mudflat surface over the last 50 years (Migniot & Le Hir 1995), and it is subjected to frequent anoxic conditions in summer (Marchand 1993; Sauriau 1995). An investigation conducted in 2002 (GIP‐Loire 2003) indicated: (i) an upstream transfer of the benthic community in accordance with physical observations showing the upstream shift of the salinity front (Verger 2005); and (ii) a decrease in water quality indicated by the proliferation of Tubifex tubifex and Heteromastus filiformis , two annelids known for their high tolerance to organic matter and their resistance to anoxic conditions (Famme & Knudsen 1985).…”

Section: Different Knowledge Levels About the Benthic Compartments Inmentioning

confidence: 85%

Benthic indicators and index approaches in the three main estuaries along the French Atlantic coast (Seine, Loire and Gironde)

Dauvin

Bachelet

Barillé³

et al. 2009

Marine Ecology

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The three main estuaries in the French Atlantic coast – the Seine, Loire and Gironde, all with high tidal regimes – are interfaces between the continental and the coastal ecosystems. The Seine and Gironde are highly contaminated, whereas the Loire remains in a more natural state. Both the Seine and Gironde have suffered from harbour construction, and as a result, their biological units are extremely compartmentalized. Benthic species and communities have adapted to tolerate temporal physical and chemical changes (e.g. salinity, substrata, depth, and levels of fine particles and oxygen) and human activities (e.g. dredging, shipping traffic, and habitat reduction). Although numerous bio‐indicators and indices are used to define the ecological quality status (EcoQS) of coastal waters, very few of them were developed specifically for environments with a mosaic of conditions and salinity levels, including freshwater. The main problem appears to be that all the indices for determining anthropogenic stress examine the abundances of stress‐tolerant species, which may also be able to tolerate natural stressors such as those occurring in estuaries. This paper takes a look at the development status of the benthic indicators and index approaches used in the three main estuaries along the French Atlantic coast. In addition, it examines the adaptation of the different benthic indicators to the taxonomic sufficiency principle, and the adaptation of the Benthic Opportunistic Polychaetes Amphipods index (BOPA) and the Benthic Opportunistic Annelida Amphipod index (BO2A) for use in the freshwater zones of transitional waters (i.e. up to the upper limit of the tidal range). Several perspectives are discussed in light of the diverse disturbances and the heterogeneity of such stressed zones, such as the use of multimetric and scoring approaches.

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Anoxic survival, growth and reproduction by the freshwater annelid, Tubifex sp., demonstrated using a new simple anoxic chemostat

Cited by 17 publications

References 9 publications

Eutrophication of Freshwaters

Eutrophication of Freshwaters

Microdistribution of interstitial meiofauna, oxygen and sulfide gradients, and the tubes of macro-infauna

Benthic indicators and index approaches in the three main estuaries along the French Atlantic coast (Seine, Loire and Gironde)

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